solar system

Question 1

nebula

Answer 1

a distinct body of interstellar clouds. Originally, the term was used to describe any diffused astronomical object, including galaxies beyond the Milky Way

Question 2

Solar Nebula

Answer 2

A large cloud of gas and dust from which the sun, planets, and other solar system bodies formed.

Question 3

Nuclear Fusion

Answer 3

a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

Question 4

Sunspot

Answer 4

are temporary phenomena on the Sun’s photosphere that appear as spots darker than the surrounding areas.

Question 5

Terrestrial Planets

Answer 5

the planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma.

Question 6

Prograde Rotation

Answer 6

the moon revolves in its orbit in the same direction as the planet rotates about its axis. they orbit their planet in the same direction as the planet is rotating.

Question 7

Retrograde Rotation

Answer 7

orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object.

Question 8

Gas Giant

Answer 8

a giant planet composed mainly of hydrogen and helium. Gas giants are also called failed stars because they contain the same basic elements as a star.

Question 9

Satellite

Answer 9

an object that has been intentionally placed into orbit. they help scientists explore space in new ways.

Question 10

New Moon

Answer 10

the first lunar phase, when the Moon and Sun have the same ecliptic longitude.

Question 11

Waxing Crescent

Answer 11

‘Waxing’ means the Moon’s illumination is growing, and ‘Crescent’ means less than half of the Moon is illuminated. This moon phase signifies intention.

Question 12

1st Quarter Moon

Answer 12

The moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view its called “first quarter” because the moon has traveled about a quarter of the way around Earth since the new moon.

Question 13

Waxing Gibbous

Answer 13

an intermediate phase of the Moon that starts right after the First Quarter, The name comes from the Moon’s shape, which is less than a Full Moon but more extensive than the Third Quarter’s semicircle shape. Waxing means that the Moon is getting bigger

Question 14

Full Moon

Answer 14

when the Moon appears fully illuminated from Earth’s perspective. This occurs when Earth is located between the Sun and the Moon.

Question 15

Comet

Answer 15

a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.

Question 16

Asteroid

Answer 16

a small rocky body orbiting the sun. Large numbers of these, ranging in size from nearly 600 miles across to dust particles.

Question 17

Asteroid Belt

Answer 17

a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars.

Question 18

Waning Gibbous

Answer 18

an intermediary Moon phase, It starts right after the Full Moon, and it lasts until the Third Quarter.

Question 19

Last Quarter Moon

Answer 19

appears half-lit by sunshine and half-immersed in its own shadow. It rises in the middle of the night, appears at its highest in the sky around dawn, and sets around midday.

Question 20

Meteoroid

Answer 20

a small body moving in the solar system that would become a meteor if it entered the earth’s atmosphere.

Question 21

Meteorite

Answer 21

a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space.

Question 22

Lunar Eclipse

Answer 22

occurs when the Moon moves into the Earth’s shadow, on average there is an eclipse of the Moon every eight months.

Question 23

Solar Eclipse

Answer 23

occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight.

Question 24

Waning Crescent

Answer 24

phase occurs when the illumination of the Moon decreases from 49.9% to 0.1%.

Question 25

Meteor

Answer 25

a small rocky or metallic body in outer space. Meteoroids are significantly smaller than asteroids.